Dura
Dura
Dura (/ˈdjʊərə/), also known as the dura mater or pachymeninx, is the outermost of the three layers of the meninges, the membranes surrounding the brain and spinal cord.
Etymology
The term "dura mater" is derived from the Latin words "dura" meaning "hard", and "mater" meaning "mother". This name reflects the dura's tough, protective role.
Function
The dura mater serves as a protective barrier between the skull and the brain, helping to prevent infections and physical damage. It also contains blood vessels that nourish the brain and cerebrospinal fluid that cushions the brain and spinal cord.
Related Terms
- Meninges: The three layers of membranes that surround the brain and spinal cord. The dura mater is the outermost layer, followed by the arachnoid mater and the pia mater.
- Arachnoid mater: The middle layer of the meninges, located between the dura mater and the pia mater.
- Pia mater: The innermost layer of the meninges, which is in direct contact with the brain and spinal cord.
- Subdural space: The space between the dura mater and the arachnoid mater, which can become filled with blood in the event of a subdural hematoma.
- Epidural space: The space between the dura mater and the walls of the vertebral canal, which is often used as a route for epidural anesthesia.
See Also
External links
- Medical encyclopedia article on Dura
- Wikipedia's article - Dura
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